a principle orders t-shirts and wants to check some of them to make sure they were printed properly. she opens the closet 2 of the 10 boxes of shirts and checks every shirt in those 2 boxes. what type of sampling is this?

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.